Closure for furnaces.



'GUIG-LEY.

APPLIOA'IIQH FILED 5133.22, 1914.

Pamnteai Jan. 26, 1915 ZSHEETS-SEEET 1.

WITNESSES:

go e": i

' F 33 'FUEZIAGES,

Application filed January 22, 191%.

' for a furnace and has for its object the provision of means wherebythe furnace may be eliectuully sealed with respect to the outsideatmosphere, the said means being of such a character that they will notbe unduly effect ed by the heat of the furnace, and to 8mbody such meansin a simple 'and convenient construction. w J

In carrylng out the above obJects 1 provide a vertically sliding, dooror closure,

whose lower end dips into a body of sand or the like, when in its closedposition, suitable means being provided for confining said body of sand.In order to make the door tight against the body of the furnace, theguiding il'lQflHSfOf the door or closure will preferably include anabutment engaging with the face of thedoor, and means will I preferablybe provided for clamping said door against said abutment.

The door itself comprises inner and outer members of sheet materiel,such as iron or steel, between which is interposed suitable heatnon-conduct1ng material, such as asbestos,'m1nerel wool or the like.Preferably the non-conducting material will be divided I into two layersseparated by an air space, and suitable means for securing the partstogether are employed.

rial relatively thicker than the inner anemher that the said innermember will not have suilicient power to warp or twist the door whensubjected to heat.

The inner and outer members are preferably spaced apart by means ofchannel members which extend along the side and upper conductingmaterial may be employed ot ire Epceificstion of Letters Patent.

1- have found that by making the outer member oi sheet mate 4.0

" clamping means.

Similar characters of reierence indicate seminseisycc.

V tervels throughout the .entire length and o eadth or" the door, andthe means for sccuring the parts together may conveniently through suchspacing and confining means. are provided, in the present instancetaking the form of channel irons so disposed that the channels extendsway from the door and form vertical recesses outside the same. Themeans for elevating the door may take any suitable form butpreferebly eflexible connection extends down through the vertical recesses in theside edgesof the door and secured thereto, the other end of saidflexible connection passing over a suiteble pulley and extending downinto the "vertical recesses outside the doorformed by the channel guidemembers, a suitable weight being attached to the flexible connectionwhich ex: tends downthrough the said outside chs nne'l guide members.The means for clamping the door against the face oi the furnace body mayconsist of eccentrics or cams or the like, which are convenientlymounted on the side guide channels. These cams or eccentrics form aclamping means when in their locked position, and a part of theconfining or guiding. means for the closure when in their unlockedposition.

The invention is embodied in the accorn-- penying drawings in a concreteand preferred form, but changes of construction .may bemade withoutdeparting from the scope of the claims.

In the said drawings: Figure 1 is a front elevation of one side of theclosure showing it in its partly raised position. Fig. 2 is a vertical.sectional view on the line 2-2 of Fig.1. Fig. 3 is a horizontal sectional view on the line 33 of Fig. 1. ,Fig. 4 is a secionel view of thelower end of the door and the means for confining the body "of sand'ona. large scale. Fig. 5 is e detail view of the the sand confining means3, conveniently in the shepe of e trough, and containih a body of sandi. Extending fromthe i urncee COIlSiZKUlCtlOIl are further the two chairnel members 5 forming side guides-fertile deer end heving their channel1 ex nding Suitable. side guides for the door '40 through said sandingand confining means,

fiiiereinafter described.

The door itself comprises inner and outer members of sheet materialrespectively marked Sand 9. The outer member 9 is of a greater thicknessthan the inner member 8 so that the inner member when aifected by heatwill not-be sufiiciently powerful to twist or warp the door as a whole.These inner and Outer members are spaced apart by the upper and lowerchannel members 10 and 11, the said lower channel member convenientlyforming a double ended extension which buries itself in-the sand 4 whenthe door is closed. The said inner and outer members are further spaced9. art by means of the channel members 12 an 13 which extend verticallyadjacent to the side edges of the door and form channels or recesseswithin the door. as shown' more particularly in Fig. 3. Interposedbetween the inner and outer members of the door is a body I ofnon-conducting material, such as asbes-' tos or mineral wool. In thepresent instance this body is shown as being divided into,

twb layers 14 and 15, separated by an air, space 16, and this body ofnon-conducting material may extend throughout the entire 1 width andbreadth of thedoor. Additional; spacing and confining means for thismatei rial are found in the sleeves or tubular} members 17 and washers18, which serve to space the inn r and outer members and the severallay'erq of non-conducting material and to keep he latter in properposition within the (1061-. li'fiesired, Suitable fastening means lil ethe bolts 19, may pass whereby the pfi comprising the door are securedtogether.

Mounted on suitable brackets 20 on the side guide channels 5 are therotatablemem hers 21 carrying the cams or eccentrics 22 and havingconnected thereto short arms 23 which are pivotally attached to avertically extending connecting rod 24, which connect- 'ing rod mayconveniently be operated by means of the handle 25 so that several ofsaid clamping means may be operated U1 unison. It will be observed thatby moving the rod 24 upward, the clamping member 7 may be disengagedfrom the front face of the door when the door may be elevated; The saidclamping members, however, per form the very important additionalfunction of serving as guides for the door, as will be readily apparent.

The door may be elevated by. any suitable means but in the presbntinstance I employ a rotatable member or pulley .26 which is mounted on astationary portion of the furnace and over which passes a flexibleconnection 27 down into. the recesses formed by the channel members 12and 13, the other end of said flexible connection having a Weight 28attached thereto and asses down through the channels formed .y the sideguide channel members 5. The pulley 26 may be operated by means of aWheel 29 and a belt 30. In addition, another pulley 31 may be mounted torotate with the member 29, and by means of a chain 32 may communicatemotion to the other side of the furnace door, where a pulley similar to26 and a flexible connection similar to 27, may be employed so as tolift both sides of the door in unison. l

What is claimed, is:

1. A closure for a furnace comprising inner and outer members of sheetmaterial, the outer member being of greater thickness than the innermember, non conducting ma- 9-5 terial interposed, between the inner andouter members, and means for securing the parts together.

2. A closure for a furnace comprisinp inner and outer members of sheetmateria the outer member being of greater thickness than the innermember, two layers of'nonconducting material separated by an air spaceinterposed between the inner and outer members, and means for securingthe parts together. r

3. A closure for a furnace comprisi inner and outer members of sheetmateria spacing members separating said inner and outer members, a bodyof non-conductin material interposed between said inner an outermembers, and means for securing the parts together.

4. A closure for a furnace comprising inner and outer members of sheetmaterial, 1.05 spacing members located adjacent to the edges of saidinner and outer members, -a body otnoirconducting material interposedbetween said inner and. outer members, and 4 means for securingthe-parts together. T10

5. A closure for a furnace comprising .inner and outer members of sheetmaterial, spacing members located adjacent to the edges of said innerand outer members, a body of noirconducting material interposed betweensaid inner and outer members, spacing and confining members between theinner and outer members and extending through the non-conductingmaterial, and

means for securing the inner and outer members together.

6. A closure for a furnace comprising inner and outer members of sheetmaterial, channel members extending vertically be tween said inner andouter men'ibers adjacent to the side edges thereof, said channel'memiiers forniinga recess in the side edgesof the closure, means forsecuring the parts together, channel members forming side guides fo theclosure and forming a recess .130

1,1ee,oso

sure over which said flexible connection passes, and a weight connectedto the other end of the said flexible connection and pass ing downthrough the recesses outside the closure. 1

7. A closure for furnaces comprising inner and outer membersof sheetmaterial, vertical and horizontal channel members disposed between saidinner and outer members at their edges forming a recess in the sideedges of the closure, spaced sheetsof non-heat conducting materialinterposed between said members, means extending transv'ersely throughsaid inner and outer members for securing said parts together andholding said non-heat conducting material in spaced relation. 8. Thecombination with a furnace having an opening therein, of a verticallyslidable closure for said opening, vertically disposed guide membersarranged at opposite sides of the closure to guide the same in itsvertical movement, 'abutments provided on,

the edges of the opening of the furnace to form back guide members forthe closure, means for raising and lowering said closure,

and means on the vertical guides for locking the closure in opened andclosed position andpto provide front .closure when unlocke guide membersfor the 9. A closure for furnaces comprising inner and outer members ofsheet material, non-heat conducting material interposed between saidmembers, channel members extending vertically and horizontally betweensaid inner and outer members adjacent their side edges ofthe closure,means for securing said parts together, a body of sand in line with thelower end of the closure and into which the lower horizontal channelmember will extend when the closure is in closed position, a rollerdisposed adjacent the closure, a flexible member extending over theroller and having one end, weighted and the other end extended down therecess in the vertical channel. members and secured to the lower end ofthe closure, means to actuate the roller, and means to lock the closurein closed or open position.

10. A closure for furnaces comprising inner and outer members of sheetmaterial, vertical and horizontal channelv members disposed between saidinner -and outer members at their edges and forming recesses in thesideedg'e's of the closure, spaced sheets of non-heat conductingmaterial. disposed between said inner and outer members, means extendingtransversely through said inner and outer members for securing saidparts together and holding said non-heat conducting sheet in spacedrelation, guide members for the closure, means secured to the closureand extending through the recesses of said vertical channel members forraising and lowering the closure, and means secured to the guide membersto engage with the outer member of the closure to cause the inner memberthereof to engage with the wall of the furnace whereby the closure maytightly seal the opening of the furnace and be supported in open orclosed position.

11. A closure for furnaces comprising inner and outer members of sheetmaterial, members disposed between said inner and outer members forholding the same in spaced and parallel relation, means connecting theinner and=outer members for holding said parts together, guide membersdisposed adjacent the vertical sides of said closure, a pulley mountedupon the upper end of each of said guide members, a flexible memberconnected to the lower end of the closure and extended over said pulleyfor raising and lowering said closure, rotatable means mounted on theguide members and adapted to engage the outer member of the closure whensaid means are rotated so that the closure will frictionally engage theouter wall of the furnace.

' 12. A closure for'furnaces comprising in ner and outer members ofsheet material, means disposed between said members to hold the same inspaced relation, means for securing said parts together, guide membersvertically disposed adjacent the opposite sides of the closure, meansfor raising and lowering the closure, a plurality of rote table membersjournaled on each of said guide members, roller members eccentricallysecured to. the inner end of said rotatable members and adapted toengage the outer member of the closure so as to force the closure intofrictional engagement with the wall of the furnace, a lever rigid withone of the rotatable members on each of said guide members, and a rodconnecting the remainder of the rotatable members of each respectiveguide with said lever thereof so that the rotatable members may beoperated in unison. 1

Signed at New York city in the county of New York and-State of New Yorkthis 20th day of January A. D. 1914.

WIRT S, QUIGLEY. Witnesses:

AxnL V. BEEKEN, EDWARD H. Yoons.

